a(n) = Sum_{d|n} sigma_3(d).

Terms

a(0) =1a(1) =10a(2) =29a(3) =83a(4) =127a(5) =290a(6) =345a(7) =668a(8) =786a(9) =1270a(10) =1333a(11) =2407a(12) =2199a(13) =3450a(14) =3683a(15) =5349a(16) =4915a(17) =7860a(18) =6861a(19) =10541a(20) =10005a(21) =13330a(22) =12169a(23) =19372a(24) =15878a(25) =21990a(26) =21226a(27) =28635a(28) =24391a(29) =36830